Brushes iPhone and iPod touchUser’s Guide phần 2 docx

When painting near the edge of the screen, it can be helpful to pull the canvas away from the screen edge. To do this, just pan, or set the zoom to 70%. When the zoom is 100% and the canvas gets close to the edge of the screen, the canvas will automatically snap back, making it easier to get back to normal. To quickly switch between 100% and your preferred zoom level, double tap on the canvas. If you do not like this behavior, you can disable it by going to the Settings app and turning off the Zooming > Double Tap option: Shortcuts While painting, you can double tap in the corners of the screen to access commonly used features: Top left Switch between the brush and the eraser Top right Change the brush size Bottom left Undo Bottom right Redo Brushes User’s Guide 10 Brush Settings To change your brush settings, tap the brush button in the toolbar. Show the brush panel. This shows the brush panel, where you can choose your brush’s shape, size, spacing, and opacity. Adjust the brush size by dragging this slider. Tap the minus and plus buttons to change the brush size one step at a time. Tap or swipe here to choose your brush. Tap here to choose between the brush and the eraser. Adjust the paint opacity or the transparency of the eraser by dragging this slider. Tap to quickly switch to the color panel. Tap to accept the brush and return to your painting. Adjust the brush spacing by dragging this slider. Brushes User’s Guide 11 Erasing The eraser is just like the brush, except it erases instead of drawing a color. To switch to the eraser, tap the eraser button in the upper left of the brush panel. The brush preview will display a checkerboard pattern to indicate that the eraser is active. Also, the brush icon in the toolbar will switch to the eraser icon. When erasing, the opacity slider at the bottom of the brush panel controls the transparency of the eraser. When it is all the way to the right, the eraser will knock out everything below it. Move the slider to the left to reduce the power of the eraser (for more subtle effects). TIP: After using the eyedropper to pick a color, Brushes automatically switches back to the brush. Brushes User’s Guide 12 Paint Color The current paint color is shown in the color well at the right of the toolbar: The current paint color To change the paint color, tap the color well. The Color panel will appear. Tap to quickly switch to the brush panel. Tap to accept the paint color and return to your painting. The brightness slider. Drag to change the brightness of the paint color. The color wheel allows you to choose the hue and saturation of the paint color. The opacity slider. Drag to change the transparency of the paint color. The Color panel uses the hue/saturation/brightness model. To change the hue and saturation of your color, drag the knob within the color wheel. The angle of the knob determines the hue, and the distance from the center determines the saturation. The closer to the center, the less saturated the color. Brushes User’s Guide 13 At the top of the Color panel there is a row of color swatches. Two of the swatches are presets that make it easy to choose black or white as your paint color. The other two display the original color (“old”) and the current color (“new”). The white swatch. Tap to quickly choose white as your paint color. The black swatch. Tap to quickly choose black as your paint color. The current color. This swatch reects the active settings in the Color panel. The original color. This swatch shows the color you started with when you opened the panel. Tap it to reset. Since the old color and new color are displayed side by side, you can use the old color to help you choose your new color. For example, it’s easy to compare changes in darkness, hue, etc. Transparency is indicated by black and white triangles that are displayed behind the color swatch. The more opaque the color, the less visible the triangles. If you don’t see the triangles at all, then the color is 100% opaque. Brushes User’s Guide 14 Eyedropper The eyedropper lets you pick up colors from your painting and paint with them. To use it, tap the eyedropper button: Activate the eyedropper tool. The eyedropper is shown as a colored ring on the canvas. Drag it around the canvas to pick up a color. When you release your nger, the color in the ring is transferred to your brush. TIP: To quickly access the eyedropper while painting, touch the canvas for half a second without moving your nger. After the eyedropper appears, move your nger to pick a color. Brushes User’s Guide 15 The eyedropper tool will not change the opacity of your paint color. When the opacity is low, the eyedropper uses a split display to indicate both the fully opaque color under your nger and the same color with the current opacity: TIP: When you start a painting, choose your palette of colors, and paint a little blob of each one on the canvas. You can then quickly choose colors from your palette by tapping and holding on the blobs. Brushes User’s Guide 16 Blending You can take advantage of the fact that the eyedropper does not modify your paint opacity to more easily blend between two colors. For example, let's say you've painted two colored regions like this, and you want a smoother blend between them: 1. Set your paint opacity relatively low. Tap the color well to show the Color panel, set the opacity to something low (around 40%), and dismiss the Color panel by tapping Done. 2. Pick up one of the colors. Tap and hold over one of the color regions for a moment to bring up the eyedropper and then release to set the paint color: Brushes User’s Guide 17 3. Blend. To blend, paint over the border between the two regions: 4. Repeat. Repeat steps 2 and 3, picking up intermediate shades within the blended area, and blending until you get a satisfyingly smooth result: Brushes User’s Guide 18 Layers A painting is made of layers. Think of each layer as a transparent sheet with paint on it. Stack the layers on top of each other, and you see the nal painting. Layers that are higher in your painting will obscure lower layers, completely or partially, depending on their contents. The painting may have up to 4 layers, but only one layer is active at a time. Painting and erasing affects only the active layer. Layers can be used to separate the elements of your painting. For example, one layer could be used for the background, another for the foreground, and a third for line work. Since you can edit the contents of any layer at any time, you could draw a foreground element rst, and later ll in the background by painting in a lower layer. The layer button, on the left side of the toolbar, shows the state of your layers. Each layer is represented by a horizontal bar. Layers that are in use are white, and layers that are unused are gray. The active layer has a longer bar. In the example below, two out of four layers are being used, and the topmost of the two layers is active: Show the layers panel. To work with your painting’s layers, tap the Layer button. The Layers panel will appear. Brushes User’s Guide 19 [...].. .Brushes User’s Guide Return to the painting Import a photo as a new layer A preview of your merged painting The layers of your painting, ordered bottom to top The active layer has a blue highlight Drag to rearrange... Fill the active layer with a color Merge the active layer with the layer below it Undo Redo Delete the active layer The layers of your painting are fanned out like a hand of cards The leftmost layer is at the bottom of your painting, and the rightmost is at the top Transparent areas in a layer are indicated by a checkerboard pattern The active layer has a blue highlight around it To make a different... double-tapping a layer or the painting preview Working with Layers To rearrange your layers, simply select one and drag it into the position that you would like You can also change the transparency of the active layer using the opacity slider The preview at the top of the panel shows the new result, immediately 20 . tapping Done. 2. Pick up one of the colors. Tap and hold over one of the color regions for a moment to bring up the eyedropper and then release to set the paint color: Brushes User’s Guide 17 3 regions: 4. Repeat. Repeat steps 2 and 3, picking up intermediate shades within the blended area, and blending until you get a satisfyingly smooth result: Brushes User’s Guide 18 Layers A painting. subtle effects). TIP: After using the eyedropper to pick a color, Brushes automatically switches back to the brush. Brushes User’s Guide 12 Paint Color The current paint color is shown in the color